Reduce usage of `//go:embed` (`containerd.yaml`, `networks.TEMPLATE.yaml`, etc.)

As in regular template YAMLs (`/usr/local/share/lima/templates/*.yaml`), `containerd.yaml`, `networks.TEMPLATE.yaml`, etc. could be read from the local directory rather than from `//go:embed`?

https://github.com/search?q=repo%3Alima-vm%2Flima+%22%2F%2Fgo%3Aembed%22&type=code

https://github.com/lima-vm/lima/blob/434aabef3f0aabc9bd21e14720906c15e756249d/pkg/limayaml/defaults.go#L61-L62

https://github.com/lima-vm/lima/blob/434aabef3f0aabc9bd21e14720906c15e756249d/pkg/networks/config.go#L23-L24

https://github.com/lima-vm/lima/blob/434aabef3f0aabc9bd21e14720906c15e756249d/pkg/cidata/template.go#L25-L31

https://github.com/lima-vm/lima/blob/434aabef3f0aabc9bd21e14720906c15e756249d/pkg/autostart/launchd/launchd.go#L19-L23

https://github.com/lima-vm/lima/blob/434aabef3f0aabc9bd21e14720906c15e756249d/pkg/autostart/systemd/systemd.go#L19-L20

## Driver-specific embeds (may stay embedded?)

https://github.com/lima-vm/lima/blob/434aabef3f0aabc9bd21e14720906c15e756249d/pkg/driver/wsl2/vm_windows.go#L72-L73

https://github.com/lima-vm/lima/blob/434aabef3f0aabc9bd21e14720906c15e756249d/pkg/driver/wsl2/wsl_driver_windows.go#L176-L177

https://github.com/lima-vm/lima/blob/434aabef3f0aabc9bd21e14720906c15e756249d/pkg/driver/vz/vz_driver_darwin.go#L231-L232

https://github.com/lima-vm/lima/blob/434aabef3f0aabc9bd21e14720906c15e756249d/pkg/driver/krunkit/krunkit_driver_darwin_arm64.go#L288-L289

## Guest agent embeds (should stay embedded probably, as the guest agent binary has been expected to be a single file)

https://github.com/lima-vm/lima/blob/434aabef3f0aabc9bd21e14720906c15e756249d/cmd/lima-guestagent/install_systemd_linux.go#L112-L113

Start with pkg/limayaml/defaults.go, pkg/networks/config.go, pkg/cidata/template.go, and the autostart launchd/systemd files, comparing their embeds with regular templates in /usr/local/share/lima/templates/*.yaml. Review the driver-specific and guest-agent embed locations to determine what remains embedded. Done means the eligible YAML and service templates are read locally without breaking their existing behavior.

Written by the indexing model from the issue text.